Kinetic Study of Copper Deposition on Iron by Cementation Reaction

Ku, Young; Chen, Chi Hwa

doi:10.1080/01496399208019424

Cited by 33 publications

(18 citation statements)

References 5 publications

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“…During cementation, copper is deposited at cationic sites on the surface while dissolution of iron (Ku and Chen, 1992). The XRD image (Fig.2) also confirmed that zero-valent copper deposited on iron surface after reaction.…”

Section: Individual Removalsupporting

confidence: 52%

Simultaneous removal of nitrate and heavy metals by iron metal

Hao

Xu²,

Jin³

et al. 2005

J Zheijang Univ Sci B

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Great attention should be paid now to simultaneously removing common pollutants, especially inorganic pollutants such as nitrate and heavy metals, as individual removal has been investigated extensively. Removing common pollutants simultaneously by iron metal is a very effective alternative method. Near neutral pH, heavy metals, such as copper and nickel, can be removed rapidly by iron metal, while nitrate removal very much slower than that of copper and nickel, and copper can accelerate nitrate removal when both are removed simultaneously. Even a little amount of copper can enhance nitrate removal efficiently. Different mechanisms of these contaminants removal by iron metal were also discussed.

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Section: Individual Removalsupporting

confidence: 52%

Simultaneous removal of nitrate and heavy metals by iron metal

Hao

Xu²,

Jin³

et al. 2005

J Zheijang Univ Sci B

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“…Transport was determined to be diffusion controlled at both operating temperatures; this finding is consistent with results from analogous rotating-disc copper cementation experiments, where diffusive contaminant transfer has been shown to limit the removal of copper over temperature ranges of 283e323 K and 298e328 K (Ku and Chen, 1992;Gros et al, 2011).…”

Section: Operating Temperature Studysupporting

confidence: 63%

“…First-order Cu 2þ and Zn 2þ removal rates have been observed previously (Ku and Chen, 1992;Wilkin and McNiel, 2003;Rangsivek and Jekel, 2005;Statham et al, 2015b), hence a reactive flux, J R,i , of the form…”

Section: Reactive Fluxmentioning

confidence: 91%

“…As the rate of this corrosion pathway has been reduced so has the inclusion of Zn 2þ into the w a t e r r e s e a r c h 7 7 ( 2 0 1 5 ) 2 4 e3 4 associated corrosion minerals (Kishimoto et al, 2011). This change in oxide formation has less influence on Cu 2þ removal as Cu 2þ can react with ZVI by a reduction pathway (Ku and Chen, 1992;Wilkin and McNiel, 2003;Rangsivek and Jekel, 2005). Film resistance has also been observed to control the removal of metal contaminants in iron-column and rotatingdisc based cementation experiments (Lee et al, 1978;Dib and Makhloufi, 2004;Agelidis et al, 1988).…”

Section: Controlling Resistancementioning

confidence: 97%

“…The modelling results indicated that only 2% of sorption sites controlled reactivity (Bi et al, 2010); which could further emphasise the importance of variations in the iron oxyhydroxide layer. Contaminant treatment kinetic rate constants have also been determined using rotating-disc cementation (Lee et al, 1978;Ku and Chen, 1992) and column experiments with varying solution velocities and/ or multiple sampling points (Komnitsas et al, 2007;Wü st et al, 1999). These observations have aided in the qualitative understanding of reactive surfaces, however quantification of ZVI reactive proportion of the total surface area from experimental data has not yet been undertaken.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The specific reactive surface area of granular zero-valent iron in metal contaminant removal: Column experiments and modelling

et al. 2015

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Optimization of the Cementation Process for the Removal of Copper in Process Effluent Discharges

Nazim¹,

Pal²,

Shoaibi³

et al. 2012

Chem Eng & Technol

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Cementation is an effective process that meets the requirements of process cleanliness. The performance of the cementation reaction is dictated by a number of variables. In this study, the effects of various parameters on the yields of copper‐iron cementation (wire and powder) were investigated. Statistical full factorial designs were used to produce appropriate mixture models for the yields. The experimental designs were done at three different levels of three operating variables, namely initial concentration, temperature, and pH. The optimization studies were carried out with MATLAB 7.0 software. The optimum yields obtained from the predicted models were found to be 0.9916 and 0.9088 for iron wire and powder, respectively, under optimized conditions, and these were in accordance with the experimental observations.

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Kinetic Study of Copper Deposition on Iron by Cementation Reaction

Cited by 33 publications

References 5 publications

Simultaneous removal of nitrate and heavy metals by iron metal

Simultaneous removal of nitrate and heavy metals by iron metal

The specific reactive surface area of granular zero-valent iron in metal contaminant removal: Column experiments and modelling

Optimization of the Cementation Process for the Removal of Copper in Process Effluent Discharges

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